Protecting-ferrule for bobbins.



L. C. BALDWIN & J. N. ANDERSON.

PROTECTING FERRULE FOR BOBBINS.

APPLICATION FILED MAR. 14, 1914.

1L 1%5,6@% Patented July 6, 1915.

W iii if 1;

IIUTHER G. BALDWIN, OF PROVIDENCE, RHODE ISLAND, AND JOHN N. ANDERSON, 0F LAWRENCE, MASSACHUSETTS, ASSIGNORS TO U. S. BOBBIN dz SHUTTLE COMPANY, OF PROVDENGE, RHODE ISLAND, A CORPORATION OF NEW JERSEY.

PROTECTING-TERRIBLE FOR BOBBINS.

Specification of Letters Patent.

Patented July 65, 1915.

Application filed March 14, 1914. Serial No. 824,807.

To all whom it may concern:

Be it known that we, LUTHER C. BALDWIN. and JOHN N. ANDERSON, citizens .of the United States, and residents, respectively, of Providence, in the county of Providence and State of Rhode Island, and Lawrence, in the county of Essex and State of Massachusetts, have invented a new and useful Improvement in Protecting-Females for Bobbins, of which the following is a specification.

This invention pertains to certain new and useful improvements in protecting ferrules for bobbins, and relates more particularly to a ferrule which is applied to the bobbin at the base or bottom thereof.

The primary object of the invention isto provide a ferrule which is applied to the base of the bobbin so as to protect and shield same, both at its periphery, bottom edge, and inner circumference, to thereby prevent splitting of the wood of which the bobbin is formed, and to also take up any wear to which the bobbin is subjected in use or in handling.

Further, the invention-aims to provide a ferrule which is of simple and economical construction, and one which may be easily and quickly applied to the bobbin, and which will effectually anchor itself, automatically, to the bobbin, after application thereto.

In the drawings: Figure 1 is a fragmentary side elevation of abobbin the base of which has the present invention applied thereto. Fig. 2 is an enlarged fragmentary longitudinal sectional view of the bobbin base shown in Fig. 1. Fig. 3 is an enlarged fragmentary sectional detail view showing more clearly the structure of the head, and Fig. 4 is a similar view of a modified form of the invention.

The invention consists of a ferrule which has a short circular outer wall or flange 1 and an inner circular and slightly tapering wall or flange 2 which latter is of considerably greater length than that of the wall or flangeil, and is arranged in spaced relation to tl e' latter. The flange l engages over the periphery of the bobbin base B, while the flange 2 engages the inner circumferential wall of the bobbin bore, said flanges being engagement with the spindle.

connected by means of an integral concavoconvex bottom member or part 3.

The extreme free end portion of the flange 2 is bent outwardly upon itself at 4 to form a reinforced head, the extreme edge of which 1s beveled at 5 so as to provide a knife edge, which when the ferrule is driven into position Wlll bite into the circumferential wall of the bobbin bore, and thereby automatically anchor the ferrule to the bobbin. The bent over portion 4 is slightly spaced from the periphery of the flange 2, so that said bent over wall will be slightly compressed when being driven into position to thereby enhance the frictional contact between the ferrule and the wall of the bobbin bore and thus increase the holding effectiveness of the ferrule'with relation to the bobbin. In use of the device,'the engagement of the flange 2 with the spindle will tend to further force the bent over part 4 into the Wall of the bobbin bore, so that the anchorage of the ferrule is increased, if affected at all by the The bobbin is thus protected on its periphery and its bore wall, and splitting of the wood at the bobbin base is prevented. The bent over portion which provides a thickened head for the flange 2 of the ferrule acts to strengthen the inner or free end of the flange 2, so that in driving the ferrule into position the shape of the flange is maintained. By having the inner flange of tapering or somewhat conical form, same can be more readily and easily driven into position.

In the modified form of the invention illustrated in Fig. 4 of the drawings, the wall of the bobbin formed by the bore thereof, is provided with a circumferential groove 6 .which is only provided in cases where the wood of which the bobbin is formed is ofsuch hardness that the knife-edge 5 will not bite into the wall of the bobbin bore and thus automatically anchor the ferrule without spinning of the ferrule.

In testimony whereof we have signed our 15 names to this specification in the presence of two subscribing witnesses.

LUTHER C. BALDWIN. JOHN N. ANDERSON. Witnesses:

MICHAEL S. OBnInN, KATHERINE A. OBRIEN. 

